Several items on the MDEX Engine Statistics page have changed, in response to support for different MDEX Engine features. The sections in this topic describe the changes in detail.
Changes to refinement generation tracking for clustering
The Performance Statistics section on the Performance Summary tab has been removed. Most of this section's metrics have been moved to the Server and Results sections of the Details tab.
Note
In version 6.1.2, the Server section of the Details tab is what used to have been titled the XQuery Server section in previous releases.
The following table lists those metrics from the Performance Statistics section of the Performance Summary tab that moved to the Details tab on the MDEX Engine Statistics page:
|
Metrics and their location in versions before 6.1.2 |
Metrics and their location in version 6.1.2 |
|---|---|
|
Location in versions before 6.1.2: → |
Location in version 6.1.2: → |
|
Metrics name: Queue length |
Metrics name: Scheduler: Queries queued |
|
Metrics name: Number of threads busy |
Metrics name: Scheduler: Queries in process |
|
Metrics name: Total processing time |
Metrics name: HTTP: Total request time |
|
Metrics name: Response size (in bytes) |
Metrics name: HTTP: Response size |
|
Location in versions before 6.1.2: → Metrics name: Number of records in result set |
Location in version 6.1.2: → Metrics name: Number of records in result set |
Previously, refinement generation in support of the clustering feature was accounted for in the "Navigation - drill-downs" and "Navigation - drill-down refinement record counts" statistics elements, which are located in the Hotspots section of the Details tab. In this release, to distinguish between the costs associated with normal refinements and those in support of clustering, a new "Clustering performance" element has been added to the Hotspots section of the Details tab.
The "Clustering performance" element contains details about clustering refinements, clustering refinement record counts, and the time spent making clusters.
The "Navigation - drill-downs" and "Navigation - drill-down refinement record counts" elements still exist but no longer include costs associated with clustering.
The Index Preparation tab now contains a separate section to track statistics for XQuery updates.
Note
For details, see the Web Services and XQuery Developer's Guide.
See the Performance Tuning Guide for detailed documentation about the MDEX Engine Statistics page and Dgraph .
